How to do the anti-rust work of iron screws

Update:23 Jun 2020
Summary:

In work and life, we often encounter rusty iron screws. […]

In work and life, we often encounter rusty iron screws. This is not surprising. Not to mention iron, stainless steel screws can also rust under certain circumstances. Many people may have thought that stainless steel screws will not rust. In fact, this kind of thinking is wrong. Under certain circumstances, not to mention stainless steel screws, even gold screws will rust. The speed of rusting of metal screws must be much faster than that of stainless steel screws. So we are trying to prevent iron screws from rusting so easily, what good way! That means how do we have to prevent iron screws from rusting?

 


The following describes how to prevent iron screws from rusting.
1. The attachments of dust or heterogeneous metal particles, in humid air, the attachments and the condensed water of the iron screws connect the two into a micro battery, which triggers an electrochemical reaction, and the protective film is damaged. Chemical corrosion.
2. The organic screw juice (such as melon and vegetable, noodle soup, sputum, etc.) adheres to the surface of the iron screw. In the presence of water and oxygen, it forms an organic acid, which will corrode the metal surface for a long time.
3. The surface of the iron screw contains acids, alkalis, salts (such as alkali water and lime water splashing on the wall), causing local corrosion.
4. In contaminated air (such as an atmosphere containing a large amount of sulfides, carbon oxides, and nitrogen oxides), when it encounters condensed water, it forms sulfuric acid, nitric acid, and acetic acid liquid spots, causing chemical corrosion.

If the above four screws are encountered, it is extremely easy to rust. Therefore, we pay more attention to the above four rusty ones. And we have to prevent the non-standard screw from rusting easily, we have to put the iron screws in a dry place, and don't let the water mist liquid get into it. Don't let contaminated things come into contact.